NumberResearchRecent thousands-block assignments
31 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026
Most carrier growth happens here, not at the prefix level: under number pooling, carriers receive individual 1,000-number blocks (e.g. 626-470-0XXX) within already-assigned prefixes. Assignments are initial assignments — the current serving carrier of individual numbers may differ due to portability.
Most active assignees, last 30 days — NPA 530
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2006-11-21 | 530-414-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | TRUCKEE | CA |
| 2006-11-15 | 530-965-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | CHICO | CA |
| 2006-11-03 | 530-204-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | DAVIS | CA |
| 2006-11-03 | 530-844-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | MARYSVILLE | CA |
| 2006-10-31 | 530-483-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | WHEATLAND | CA |
| 2006-10-31 | 530-645-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | MARYSVILLE | CA |
| 2006-10-31 | 530-746-2XXX | 2000–2999 | Assigned | AT&T ENTERPRISES, LLC | 516C | DAVIS | CA |
| 2006-10-25 | 530-736-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | RED BLUFF | CA |
| 2006-10-24 | 530-231-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DAVIS | CA |
| 2006-10-23 | 530-923-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | MARYSVILLE | CA |
| 2006-10-20 | 530-216-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | MARYSVILLE | CA |
| 2006-09-13 | 530-526-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | RED BLUFF | CA |
| 2006-09-13 | 530-701-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | MARYSVILLE | CA |
| 2006-09-07 | 530-917-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | REDDING | CA |
| 2006-09-07 | 530-917-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | REDDING | CA |
| 2006-09-07 | 530-917-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | REDDING | CA |
| 2006-09-07 | 530-921-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | REDDING | CA |
| 2006-09-07 | 530-921-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | REDDING | CA |
| 2006-09-05 | 530-386-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | TRUCKEE | CA |
| 2006-09-05 | 530-736-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | RED BLUFF | CA |
| 2006-08-30 | 530-558-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | SHINGLESPG | CA |
| 2006-08-28 | 530-420-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | ROBBINS | CA |
| 2006-08-28 | 530-422-6XXX | 6000–6999 | Assigned | IP HORIZON LLC | 515J | CLFX WEMR | CA |
| 2006-08-28 | 530-423-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | WEAVERVL | CA |
| 2006-08-28 | 530-618-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | HOOPA | CA |
| 2006-08-28 | 530-627-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | ORLEANS | CA |
| 2006-08-28 | 530-628-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | HAYFORK | CA |
| 2006-08-10 | 530-844-5XXX | 5000–5999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7145 | MARYSVILLE | CA |
| 2006-08-09 | 530-723-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | WOODLAND | CA |
| 2006-08-09 | 530-902-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | DAVIS | CA |
| 2006-08-09 | 530-921-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | REDDING | CA |
| 2006-08-09 | 530-921-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | REDDING | CA |
| 2006-08-09 | 530-927-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | QUINCY | CA |
| 2006-08-04 | 530-250-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SUSANVILLE | CA |
| 2006-08-01 | 530-312-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | WOODLAND | CA |
| 2006-07-26 | 530-965-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | CHICO | CA |
| 2006-07-25 | 530-402-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | WOODLAND | CA |
| 2006-07-18 | 530-205-9XXX | 9000–9999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | GRVY MAIN | CA |
| 2006-07-18 | 530-231-5XXX | 5000–5999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | DAVIS | CA |
| 2006-07-18 | 530-264-7XXX | 7000–7999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | NEVADACITY | CA |
| 2006-07-18 | 530-329-8XXX | 8000–8999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | MARYSVILLE | CA |
| 2006-07-18 | 530-344-7XXX | 7000–7999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | PLVL WEST | CA |
| 2006-07-18 | 530-350-7XXX | 7000–7999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | SHINGLESPG | CA |
| 2006-07-18 | 530-483-9XXX | 9000–9999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | WHEATLAND | CA |
| 2006-07-18 | 530-695-6XXX | 6000–6999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | LIVE OAK | CA |
| 2006-07-17 | 530-327-7XXX | 7000–7999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | PARADISE | CA |
| 2006-07-17 | 530-693-4XXX | 4000–4999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | OROVILLE | CA |
| 2006-07-17 | 530-748-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | PLVL WEST | CA |
| 2006-07-07 | 530-207-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | WOODLAND | CA |
| 2006-07-07 | 530-366-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | RED BLUFF | CA |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.